As @ 1000 µg/mL in 5% HNO3, 100ml

CONOSTAN S-21 + AS+Co+Sb+Se, 300ppm in 75cSt oil, 200g

Sulfur, 1500µg/g (0.150 wt%) in 75 cSt Mineral Oil, 100ml

PE UV Wave Cal Solution in 5pct HCL